Bash

A quick reference for repairing corrupted MyISAM index files with myisamchk, including the exact command and what to expect when running it against a database directory.

A quick reference for checking listening ports on Linux using netstat and ss, including the flags that matter and what each output column means.

A practical walkthrough of setting up Nginx round-robin load balancing, including upstream configuration, weighted distribution, IP hashing, and failover directives.

Learn how to chain multiple if conditions in Nginx to build a composite variable and route traffic based on the combined result.

A practical reference for Nginx’s ngx_http_rewrite_module, covering the break, if, return, rewrite, set, and related directives with working examples and processing-order details.

The noapic kernel parameter disables the Advanced Programmable Interrupt Controller, a useful workaround for interrupt routing issues on older or misconfigured systems.